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Salesforce DEX-450 : Programmatic Development using Apex and Visualforce in Lightning Experience
- Exam Code: DEX-450
- Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
- Updated: Oct 13, 2026
- Q & A: 202 Questions and Answers
About Salesforce DEX-450 Exam
Two steps are all it takes to start. Pick your DEX-450 product at VCETorrent, complete the secure payment, and your materials land in your email almost at once — in 2026, preparing for the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience really can be that simple.
Salesforce DEX-450 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Apex Programming Fundamentals | - Collections and data handling
|
| Topic 2: Database and SOQL/SOSL | - DML operations
|
| Topic 3: Apex Triggers and Automation | - Order of execution
|
| Topic 4: Visualforce Development | - Pages and controllers
|
| Topic 5: Security and Best Practices | - Governor limits
|
| Topic 6: Testing and Debugging | - Apex testing framework
|
DEX-450 Exam FAQ: Details, Policies, and Study Options
The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience blueprint breaks down into these main domains:
- Database and SOQL/SOSL
- Apex Triggers and Automation
- Visualforce Development
Additional domains follow in the official outline, and our question bank covers every one of them.
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You can register through the official channels below:
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Salesforce lists the following prerequisites for the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience: Basic understanding of object-oriented programming and database concepts is recommended. Prior Salesforce experience is helpful but not strictly required..
You can verify the details on the official certification page.
If you fail the corresponding exam within 60 days of your purchase, we will refund you in full. Simply send a scanned copy of your enrollment slip and your official Score Report PDF within two days of taking the exam; we process verified claims within seven days. A few conditions apply: exams taken within three days of purchase are not covered, the candidate name must match the payer, and free or expired products are excluded. If you would rather keep preparing, we can exchange your product for two others of equal value instead.
Salesforce suggests the following official training options:
These courses pair well with hands-on question practice if you want a structured path through the material.
Because it was built for people with little time to spare. The bank covers the important knowledge points of the current Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience blueprint with expert-verified answers, and you study in the format that fits you: a printable PDF you can mark up with a pen, or PC and online versions that simulate the real exam interactively and let you assess your pace. A free demo lets you confirm the quality before you buy, and every purchase includes 365 days of free updates plus a 50% renewal discount afterward.
Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions:
Question #1
A developer creates a Lightning web component that imports a method within an Apex class. When a Validate button is pressed, the method runs to execute complex validations.
In this implementation scenario, which two options are.. of the Controller according to the MVC architecture?
Choose 2 answers
- A. JavaScript file
- B. HTML file
- C. XML file
- D. Apex class
Correct Answer: A,D 🗳️
Question #2
What are two benefits of using External IDs?
Choose 2 answers
- A. An External 1D is indexed and can improve the performance of SOOL queries.
- B. An External ID can be a formula field ta help create a unique key from two fields in Salesforce.
- C. An External ID field can be used to reference an ID from another external system.
- D. An External ID can be used with Salesforce Mobile to make external data visible.
Correct Answer: A,C 🗳️
Question #3
A developer identifies the following triggers on the Expense _c object:
The triggers process before delete, before insert, and before update events respectively.
Which two techniques should the developer implement to ensure trigger best practices are followed?
Choose 2 answers
- A. Unify the before insert and before update triggers and use Flow for the delete action.
- B. Maintain all three triggers on the Expense __c object, but move the Apex logic out of the trigger definition.
- C. Create helper classes to execute the appropriate logic when a record is saved.
- D. Unity all three triggers In a single trigger on the Expense__c object that Includes all events.
Correct Answer: C,D 🗳️
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Question #4
A developer creates a custom exception as shown below:
public class ParityException extends Exception { }
What are two ways the developer can fire the exception in Apex?
- A. throw new ParityException ();
- B. new ParityException ();
- C. new ParityException('parity does not match');
- D. throw new parityException ('parity does not match');
Correct Answer: A,D 🗳️
Question #5
Universal Containers decides to use purely declarative development to build out a new Salesforce application.
Which two options can be used to build out the business logic layer for this application?
Choose 2 answers
- A. Validation Rules
- B. Remote Actions
- C. Batch Jobs
- D. Record-Triggered Flow
Correct Answer: A,D 🗳️
Viewing page 1 out of 41 pages.
Viewing questions 1-5 out of 202 questions.
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